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最終更新日：2026/04/08
永田 直也
ナガタ ナオヤ
(Naoya Nagata)
論文
- タイトル
- Bioimpedance analysis for identifying new indicators of exercise-induced muscle damage
- タイトル（英）
- Bioimpedance analysis for identifying new indicators of exercise-induced muscle damage
- 参照URL
- https://researchmap.jp/naoya.nagata/published_papers/48378115
- 著者
- Yamaguchi S.,Inami T.,Ishida H.,Nagata N.,Murayama M.,Morito A.,Yamada S.,Kohtake N.
- 著者（英）
- Yamaguchi S.,Inami T.,Ishida H.,Nagata N.,Murayama M.,Morito A.,Yamada S.,Kohtake N.
- 担当区分
- 概要
- A noninvasive, immediate, and convenient method for assessing muscle tissue status during exercise-induced muscle damage (EIMD) has not been established. This study was designed to assess and determine parameters suitable for measuring EIMD after eccentric exercise, using multi-frequency bioimpedance analysis (BIA). Thirty-five young male participants performed dumbbell exercises with their left arm, and their BIA parameters were measured at various time points up to 168 h post exercise using a multi-frequency BIA device. At all-time points, intra and extracellular water content was greater in the left arm than in the right arm, whereas the impedance, reactance, resistance, and phase angle were lower in the left arm than in the right arm. Established EIMD indices, such as maximal isometric voluntary contraction, were measured and used in correlational analyses. Only reactance was correlated with biomarkers, indicating muscle damage (r = − 0.56 to − 0.49). Furthermore, reactance was found to correlate well with indirect indicators of EIMD, suggesting that it may be a suitable marker for evaluating EIMD. However, the relationship with the limited evaluation indices employed in this study is constrained. Future studies should investigate the correlation between reactance and direct damage indicators, such as structural damage, observed in biopsies.
- 概要（英）
- A noninvasive, immediate, and convenient method for assessing muscle tissue status during exercise-induced muscle damage (EIMD) has not been established. This study was designed to assess and determine parameters suitable for measuring EIMD after eccentric exercise, using multi-frequency bioimpedance analysis (BIA). Thirty-five young male participants performed dumbbell exercises with their left arm, and their BIA parameters were measured at various time points up to 168 h post exercise using a multi-frequency BIA device. At all-time points, intra and extracellular water content was greater in the left arm than in the right arm, whereas the impedance, reactance, resistance, and phase angle were lower in the left arm than in the right arm. Established EIMD indices, such as maximal isometric voluntary contraction, were measured and used in correlational analyses. Only reactance was correlated with biomarkers, indicating muscle damage (r = − 0.56 to − 0.49). Furthermore, reactance was found to correlate well with indirect indicators of EIMD, suggesting that it may be a suitable marker for evaluating EIMD. However, the relationship with the limited evaluation indices employed in this study is constrained. Future studies should investigate the correlation between reactance and direct damage indicators, such as structural damage, observed in biopsies.
- 出版者・発行元
- 出版者・発行元（英）
- 誌名
- Scientific Reports
- 誌名（英）
- Scientific Reports
- 巻
- 14
- 号
- 1
- 開始ページ
- 終了ページ
- 出版年月
- 2024年
- 査読の有無
- 査読有り
- 招待の有無
- 掲載種別
- 研究論文（学術雑誌）
- ISSN
- DOI URL
- https://doi.org/10.1038/s41598-024-66089-8
- 共同研究・競争的資金等の研究課題